Clutch driving mechanism with overload protection function

Abstract

The utility model discloses a clutch driving mechanism with an overload protection function, which comprises an input shaft, the input shaft is fixedly connected with a driving disc, the outer wall of the driving disc is provided with a driven disc, the driven disc is provided with a gear ring, the gear ring is meshed with a gear, the inner wall of the gear is fixedly connected with an output shaft, and the output shaft is fixedly connected with the output shaft. The output shaft is slidably connected with a driving block in a penetrating mode, the output shaft is slidably connected with a pressing disc in a penetrating mode, a plurality of overload protection assemblies are arranged on the outer wall of the driven disc, the output shaft and load equipment connected with the output shaft can be prevented from being damaged by overlarge torque through the assemblies, the reliability of the equipment is greatly improved, and the service life of the equipment is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to clutch technical field especially relates to clutch drive mechanism with overload protection function. BACKGROUND

[0002] In mechanical transmission system, clutch is a very important component, it is used for connecting and cutting off the transmission of power, makes mechanical system can start, stop and change speed flexibly. However, in the actual working process, mechanical system often encounters various complex working conditions, and the load equipment can encounter abnormal resistance, resulting in that the torque borne by the output shaft exceeds the normal range.

[0003] The traditional clutch often lacks effective protection mechanism when facing overload, and excessive torque can cause damage to parts such as gears and shafts in the transmission system, increase the maintenance cost and downtime of the equipment, and affect the production efficiency and service life of the equipment. Therefore, in order to improve the reliability and stability of the mechanical transmission system, a clutch drive mechanism with overload protection function is needed, and accordingly the utility model provides a new clutch drive mechanism with overload protection function. UTILITY MODEL CONTENTS

[0004] The utility model discloses a clutch drive mechanism with overload protection function, which solves the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The clutch drive mechanism with overload protection function comprises an input shaft, characterized in that the input shaft is fixedly connected with a driving disc, the outer wall of the driving disc is provided with a driven disc, the driven disc is provided with a gear ring, the gear ring is engaged with a gear, the inner wall of the gear is fixedly connected with an output shaft, the output shaft is slidably connected with a driving block, the output shaft is slidably connected with a pressure plate, and the outer wall of the driven disc is provided with a plurality of overload protection assemblies.

[0007] Preferably, the overload protection assembly is composed of a fixed plate, a sliding block and a return spring, the fixed plate is provided with a sliding groove, the sliding block is slidably connected with the sliding groove, one end of the return spring is fixedly connected with the inner wall of the fixed plate, and the other end is fixedly connected with the sliding block.

[0008] Preferably, the pressure plate is fixedly connected with the driving block, and the end of the driving disc away from the input shaft is a friction surface with extremely high friction coefficient.

[0009] Preferably, the outer wall of the sliding block is fixedly connected with a friction block, the end of the friction block away from the sliding block is a friction surface with extremely high friction coefficient, and the friction block is frictionally connected with the driving disc.

[0010] Preferably, a plurality of piston cylinders are fixedly connected to the end of the pressure plate away from the driving block, a piston rod is slidably connected in the piston cylinder, and a pressure spring is sleeved on the outer wall of the piston cylinder.

[0011] Preferably, the end of the driving disc away from the driven disc is connected with an external power source through an input shaft, and the output shaft rotates synchronously with the driven disc.

[0012] The utility model has the advantages of the following beneficial effects:

[0013] 1. When the load device encounters abnormal resistance and the torque borne by the output shaft exceeds the preset value, the overload protection assembly will respond immediately. Under the influence of the reverse force, the sliding block overcomes the elastic force of the reset spring and slides, so that the contact pressure between the friction block and the driving disc increases, sliding friction is generated, and the torque transmitted from the driving disc to the driven disc is limited. At the same time, the pressure spring is further compressed, the pressure plate and the driving block are displaced on the output shaft, the pressing force and the force transmission state between the driving disc and the driven disc are changed, and the torque transmission is further limited. This double protection mechanism can prevent excessive torque from damaging the output shaft and the load device connected thereto, greatly improving the reliability and service life of the device.

[0014] 2. When the overload condition disappears, the reset spring will push the sliding block back to the initial position, the friction block and the driving disc will return to the normal contact state, and the clutch driving mechanism can automatically restore normal operation and continue to transmit power from the input shaft to the output shaft. This automatic reset function does not require manual intervention, reduces the downtime of the device, and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a clutch driving mechanism with overload protection function structure schematic view;

[0016] Figure 2 It is the schematic view of pressure plate structure.

[0017] Figure 3 It is the structure schematic view of driven disc.

[0018] Figure 4 It is the structure schematic view of overload protection assembly.

[0019] In the drawing: 1, input shaft; 2, driving disc; 3, driven disc; 301, gear ring; 302, fixed plate; 4, pressure plate; 5, output shaft; 501, gear; 6, driving block; 7, pressure spring; 8, sliding block; 9, sliding slot; 10, reset spring; 11, piston cylinder; 12, piston rod; 13, friction block. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Figures 1-4 The clutch driving mechanism with overload protection function comprises an input shaft 1, a driving disc 2 fixedly connected to the input shaft 1, a driven disc 3 provided on the outer wall of the driving disc 2, a gear ring 301 provided on the driven disc 3, a gear 501 engaged with the gear ring 301, an output shaft 5 fixedly connected to the inner wall of the gear 501, a driving block 6 slidingly connected to the output shaft 5, a pressure disc 4 slidingly connected to the output shaft 5, a plurality of overload protection assemblies provided on the outer wall of the driven disc 3, each of the overload protection assemblies comprising a fixed plate 302, a sliding block 8 and a return spring 10, a sliding groove 9 formed in the fixed plate 302, the sliding block 8 slidingly connected to the sliding groove 9, one end of the return spring 10 fixedly connected to the inner wall of the fixed plate 302 and the other end of the return spring 10 fixedly connected to the sliding block 8, the pressure disc 4 fixedly connected to the driving block 6, the end of the driving disc 2 away from the input shaft 1 being a friction surface with extremely high friction coefficient, a friction block 13 fixedly connected to the outer wall of the sliding block 8, the end of the friction block 13 away from the sliding block 8 being a friction surface with extremely high friction coefficient, the friction block 13 frictionally connected to the driving disc 2, a plurality of piston cylinders 11 fixedly connected to the end of the pressure disc 4 away from the driving block 6, a piston rod 12 slidingly connected to the piston cylinder 11, a pressure spring 7 sleeved on the outer wall of the piston cylinder 11, the end of the driving disc 2 away from the driven disc 3 connected to an external power source through the input shaft 1, and the output shaft 5 synchronously rotating with the driven disc 3.

[0022] Further, the sliding block 8 is T-shaped and the sliding groove 9 is a T-shaped sliding groove, so that the sliding block 8 is prevented from being separated from the sliding groove 9.

[0023] Further, the maximum stroke of the piston rod 12 sliding in the piston cylinder 11 is approximately equal to the maximum stretching stroke of the pressure spring 7, and the minimum stroke of the piston rod 12 sliding in the piston cylinder 11 is approximately equal to the maximum compression stroke of the pressure spring 7.

[0024] Further, the driving block 6 is provided with an electromagnetic control device, so that the driven disc 3 can be actively separated from the driving disc 2.

[0025] The utility model discloses a device, when using specifically: power input and transmission: external power source transmits power to input shaft 1, and input shaft 1 drives driving disc 2 synchronous rotation because driving disc 2 and input shaft 1 fixed connection, both rotation speed are same. At this time, because output shaft 5 and driven disc 3 are connected through the meshing of gear 501 and gear ring 301, realize power from driving disc 2 transmission to output shaft 5 through driven disc 3, drive and output shaft 5 connected load equipment operation. At the same time, the compression plate 4 is fixedly connected with the driving block 6, the compression plate 4 pushes the piston cylinder 11, and the piston cylinder 11 and the piston rod 12 keep stable relative position, and the pressure spring 7 maintains the compressed state, guarantees that each component is connected closely.

[0026] The fixed plate 302 is fixed on the outer wall of the driven disc 3, and the sliding block 8 is in a specific position in the sliding groove 9 under the action of the reset spring 10. The friction block 13 on the sliding block 8 is in slight contact with the driving disc 2, preparing for the action in overload.

[0027] When the load equipment encounters abnormal resistance, and the torque of the output shaft 5 exceeds the preset value, the driven disc 3 will feel a larger reverse force. Since the overload protection assembly is installed on the outer wall of the driven disc 3, the stress change of the driven disc 3 will be transmitted to the overload protection assembly.

[0028] Under the influence of the reverse force, the sliding block 8 overcomes the elastic force of the reset spring 10 and slides in the sliding groove 9 of the fixed plate 302. The contact pressure between the friction block 13 on the sliding block 8 and the driving disc 2 increases, and sliding friction occurs between the friction surfaces. This sliding limits the torque transmitted from the driving disc 2 to the driven disc 3, preventing excessive torque from damaging the output shaft 5 and the load equipment connected thereto. At the same time, the pressure spring 7 is further compressed, the piston cylinder 11 and the piston rod 12 slide relative to each other, the compression plate 4 and the driving block 6 produce a certain displacement on the output shaft 5, changing the compression force and force transmission state between the driving disc 2 and the driven disc 3, and further limiting torque transmission.

[0029] Since relative sliding occurs between the driving disc 2 and the driven disc 3, the rotation speed of the output shaft 5 is no longer synchronized with the driving disc 2, avoiding damage to the equipment caused by overload. When the overload condition disappears, the reset spring 10 pushes the sliding block 8 back to the initial position, the friction block 13 returns to the normal contact state with the driving disc 2, and the clutch driving mechanism returns to normal work, continuing to transmit power from the input shaft 1 to the output shaft 5.

[0030] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model does not limit to this, any skilled person in the art in the utility model disclosed technical range, according to the utility model technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. Clutch drive mechanism with overload protection, comprising an input shaft (1), characterized in that, The input shaft (1) is fixedly connected with a driving disc (2), the outer wall of the driving disc (2) is provided with a driven disc (3), the driven disc (3) is provided with a gear ring (301), the gear ring (301) is engaged with a gear (501), the inner wall of the gear (501) is fixedly connected with an output shaft (5), the output shaft (5) is slidingly connected with a driving block (6), the output shaft (5) is slidingly connected with a pressure plate (4), and the outer wall of the driven disc (3) is provided with a plurality of overload protection assemblies.

2. The clutch drive mechanism with overload protection function according to claim 1, characterized in that, The overload protection assembly is composed of a fixed plate (302), a sliding block (8) and a reset spring (10), the fixed plate (302) is provided with a sliding groove (9) in the inner wall, the sliding block (8) is slidingly connected with the sliding groove (9), one end of the reset spring (10) is fixedly connected with the inner wall of the fixed plate (302), and the other end is fixedly connected with the sliding block (8).

3. The clutch drive mechanism with overload protection function according to claim 1, characterized in that, The pressure plate (4) is fixedly connected with the driving block (6), and the end, away from the input shaft (1), of the driving disc (2) is a friction surface with extremely high friction coefficient.

4. The clutch drive mechanism with overload protection function according to claim 2, characterized by, The outer wall of the sliding block (8) is fixedly connected with a friction block (13), one end, away from the sliding block (8), of the friction block (13) is a friction surface with extremely high friction coefficient, and the friction block (13) is frictionally connected with the driving disc (2).

5. The clutch drive mechanism with overload protection function according to claim 1, characterized in that, The end, away from the driving block (6), of the pressure plate (4) is fixedly connected with a plurality of piston cylinders (11), the piston cylinders (11) are slidingly connected with piston rods (12) in the inner wall, and the outer wall of the piston cylinder (11) is sleeved with a pressure spring (7).

6. The clutch drive mechanism with overload protection function according to claim 1, characterized by, The end, away from the driven disc (3), of the driving disc (2) is connected with an external power source through the input shaft (1), and the output shaft (5) rotates synchronously with the driven disc (3).

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